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Submission #464588

# Submission time Handle Problem Language Result Execution time Memory
464588 2021-08-13T13:20:00 Z TheScrasse Klasika (COCI20_klasika) C++17
110 / 110
 993 ms 304524 KB 
#include <bits/stdc++.h>
using namespace std;

#define nl "\n"
#define nf endl
#define ll long long
#define pb push_back
#define _ << ' ' <<

#define INF (ll)1e18
#define mod 998244353
#define maxn 200010

struct trie {
    vector<array<ll, 2>> ta;
    vector<array<ll, 3>> tv;
    ll tcr, td;

    trie(): ta({}), tv({{0, 0, 0}}), tcr(1), td(0) {}

    void ins(ll p, ll x) {
        ll i, k, s = 0;
        ta.pb({p, x});
        for (i = 30; i >= -1; i--) {
            tv[s][2] = min(tv[s][2], p);
            if (i == -1) continue;
            k = ((x >> i) & 1);
            if (tv[s][k] == 0) {
                tv[s][k] = tcr; tcr++; tv.pb({0, 0, INF});
            }
            s = tv[s][k];
        }
    }

    ll find_max(ll x, ll m) {
        // cout << "find_max " << x _ m << nl;
        ll i, k, s = 0, r = 0;
        for (i = 30; i >= 0; i--) {
            k = ((x >> i) & 1);
            if (tv[s][k ^ 1] != 0 && tv[tv[s][k ^ 1]][2] <= m) {
                s = tv[s][k ^ 1]; r += (1 << i);
            } else {
                s = tv[s][k];
            }
        }
        return r;
    }
};

ll i, i1, j, k, k1, t, n, m, res, flag[10], a, b;
ll cr, pr[maxn], dp[maxn], q;
bool vis[maxn];
string s;
vector<array<ll, 2>> rs;
vector<array<ll, 2>> adj[maxn];
vector<array<ll, 3>> qdj[maxn];
trie tr[maxn];

void onion(ll a, ll b, ll d) { // (a, b) = (high, low)
    if (tr[a].ta.size() < tr[b].ta.size()) {
        swap(tr[a], tr[b]); tr[a].td ^= d; tr[b].td ^= d;
    }
    for (auto [p, x] : tr[b].ta) tr[a].ins(p, x ^ d ^ tr[a].td ^ tr[b].td);
    tr[b] = trie();
}

void dfs(ll s) {
    for (auto [u, w] : adj[s]) {
        dp[u] = dp[s] ^ w;
        dfs(u);
    }
}

void sml(ll s) {
    for (auto [u, w] : adj[s]) {
        sml(u);
        onion(s, u, w);
    }

    for (auto [u, m, t] : qdj[s]) {
        rs.pb({t, tr[s].find_max(dp[s] ^ dp[u] ^ tr[s].td, m)});
    }

    /* cout << "dbg trie " << s << nl;
    for (auto u : tr[s].ta) cout << u[0] _ u[1] << nl;
    for (auto u : tr[s].tv) cout << u[0] _ u[1] _ u[2] << nl;
    cout << "tcr = " << tr[s].tcr << nl;
    cout << "td = " << tr[s].td << nl;
    cout << nl; */
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    #if !ONLINE_JUDGE && !EVAL
        ifstream cin("input.txt");
        ofstream cout("output.txt");
    #endif

    cin >> q; cr = 2;
    for (i = 1; i <= q; i++) {
        cin >> s >> a >> b;
        if (s[0] == 'A') {
            adj[a].pb({cr, b}); cr++; // directed?
        } else {
            qdj[b].pb({a, cr - 1, i});
        }
    }

    n = cr - 1;
    for (i = 1; i <= n; i++) tr[i].ins(i, 0);

    dfs(1); sml(1);

    sort(rs.begin(), rs.end());
    for (auto [cr, u] : rs) cout << u << nl;

    return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 28620 KB Output is correct
2 Correct 24 ms 28572 KB Output is correct
3 Correct 24 ms 28764 KB Output is correct
4 Correct 24 ms 28704 KB Output is correct
5 Correct 31 ms 28576 KB Output is correct
6 Correct 25 ms 28620 KB Output is correct
7 Correct 25 ms 28752 KB Output is correct
8 Correct 25 ms 28848 KB Output is correct
9 Correct 24 ms 28592 KB Output is correct
10 Correct 24 ms 28768 KB Output is correct
11 Correct 24 ms 28792 KB Output is correct
12 Correct 25 ms 28756 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 28620 KB Output is correct
2 Correct 24 ms 28572 KB Output is correct
3 Correct 24 ms 28764 KB Output is correct
4 Correct 24 ms 28704 KB Output is correct
5 Correct 31 ms 28576 KB Output is correct
6 Correct 25 ms 28620 KB Output is correct
7 Correct 25 ms 28752 KB Output is correct
8 Correct 25 ms 28848 KB Output is correct
9 Correct 24 ms 28592 KB Output is correct
10 Correct 24 ms 28768 KB Output is correct
11 Correct 24 ms 28792 KB Output is correct
12 Correct 25 ms 28756 KB Output is correct
13 Correct 27 ms 29488 KB Output is correct
14 Correct 27 ms 30144 KB Output is correct
15 Correct 28 ms 30552 KB Output is correct
16 Correct 28 ms 31688 KB Output is correct
17 Correct 27 ms 29528 KB Output is correct
18 Correct 30 ms 30188 KB Output is correct
19 Correct 28 ms 30716 KB Output is correct
20 Correct 31 ms 31060 KB Output is correct
21 Correct 27 ms 29372 KB Output is correct
22 Correct 28 ms 30196 KB Output is correct
23 Correct 25 ms 30768 KB Output is correct
24 Correct 28 ms 31116 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 267 ms 93688 KB Output is correct
2 Correct 366 ms 157204 KB Output is correct
3 Correct 438 ms 192492 KB Output is correct
4 Correct 500 ms 278052 KB Output is correct
5 Correct 376 ms 93096 KB Output is correct
6 Correct 615 ms 175868 KB Output is correct
7 Correct 776 ms 198092 KB Output is correct
8 Correct 990 ms 283912 KB Output is correct
9 Correct 330 ms 100296 KB Output is correct
10 Correct 427 ms 168616 KB Output is correct
11 Correct 552 ms 212076 KB Output is correct
12 Correct 650 ms 303504 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 28620 KB Output is correct
2 Correct 24 ms 28572 KB Output is correct
3 Correct 24 ms 28764 KB Output is correct
4 Correct 24 ms 28704 KB Output is correct
5 Correct 31 ms 28576 KB Output is correct
6 Correct 25 ms 28620 KB Output is correct
7 Correct 25 ms 28752 KB Output is correct
8 Correct 25 ms 28848 KB Output is correct
9 Correct 24 ms 28592 KB Output is correct
10 Correct 24 ms 28768 KB Output is correct
11 Correct 24 ms 28792 KB Output is correct
12 Correct 25 ms 28756 KB Output is correct
13 Correct 27 ms 29488 KB Output is correct
14 Correct 27 ms 30144 KB Output is correct
15 Correct 28 ms 30552 KB Output is correct
16 Correct 28 ms 31688 KB Output is correct
17 Correct 27 ms 29528 KB Output is correct
18 Correct 30 ms 30188 KB Output is correct
19 Correct 28 ms 30716 KB Output is correct
20 Correct 31 ms 31060 KB Output is correct
21 Correct 27 ms 29372 KB Output is correct
22 Correct 28 ms 30196 KB Output is correct
23 Correct 25 ms 30768 KB Output is correct
24 Correct 28 ms 31116 KB Output is correct
25 Correct 267 ms 93688 KB Output is correct
26 Correct 366 ms 157204 KB Output is correct
27 Correct 438 ms 192492 KB Output is correct
28 Correct 500 ms 278052 KB Output is correct
29 Correct 376 ms 93096 KB Output is correct
30 Correct 615 ms 175868 KB Output is correct
31 Correct 776 ms 198092 KB Output is correct
32 Correct 990 ms 283912 KB Output is correct
33 Correct 330 ms 100296 KB Output is correct
34 Correct 427 ms 168616 KB Output is correct
35 Correct 552 ms 212076 KB Output is correct
36 Correct 650 ms 303504 KB Output is correct
37 Correct 319 ms 98508 KB Output is correct
38 Correct 394 ms 158536 KB Output is correct
39 Correct 469 ms 194400 KB Output is correct
40 Correct 500 ms 278632 KB Output is correct
41 Correct 393 ms 112012 KB Output is correct
42 Correct 610 ms 176284 KB Output is correct
43 Correct 756 ms 201800 KB Output is correct
44 Correct 993 ms 291668 KB Output is correct
45 Correct 339 ms 105952 KB Output is correct
46 Correct 453 ms 171420 KB Output is correct
47 Correct 560 ms 213656 KB Output is correct
48 Correct 634 ms 304524 KB Output is correct